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Biomechanics > Test 1 > Flashcards

Test 1 Flashcards

1
Q

biomechanics is the breakdown of what

A

biology - mechanics is statics and dynamics

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2
Q

statics of mechanics can be broken down into what

A

linear and angular

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3
Q

dynamics of mechanics can be broken down into

A

linear and angular

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4
Q

linear is what

A

all particles of a system move in the same direction in a straight line and cover the same distance in the same length of time at the same velocity.

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5
Q

angular is what

A

all particles of a system move around an angle and travel different distances in the same length of time

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6
Q

motor behavior is what

A

motor development, motor learning, motor control

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7
Q

mass standard unit

A

quantity of matter in an object (m) kg

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8
Q

weight standard unit

A

mass times gravity

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9
Q

gravity is what constant

A

9.81 m/s2

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10
Q

what is the unit for weight

A

newton

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11
Q

length standard unit

A

km or meters or cm

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12
Q

how to get to mass from weight

A

150lbs is 68kg then divide by 9.8 then it is 665.83n

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13
Q

direct conversation to lbs to newton

A

multiply lbs by 4.448

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14
Q

kinematics is what

A

study of motion

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15
Q

kinetics is what

A

study of forces

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16
Q

kinematics is broken down into what three things

A

position to velocity to acceleration

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17
Q

position(motion in space) is defined at what letters(symbol)

A

x,y

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18
Q

what’s the unit for position

A

meters

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19
Q

whatis the symbol for velocity

A

v

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20
Q

how to calculate velocity

A

position final - position initial / change in time

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21
Q

what is the units for change in velocity

A

m/s

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22
Q

acceleration symbol is what

A

little a

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23
Q

definition of acceleration

A

change in velocity over time

24
Q

definition of velocity

A

change in position with time

25
Q

formula for acceleration

A

velocity final - velocity initial / change in time

26
Q

unit is what for acceleration

A

m/s2

27
Q

what is the most common form of motion

A

general motion (has linear and angular motion)

28
Q

absolute motion

A

one fixed frame of reference (ground)

29
Q

relative motion

A

one fixed frame of reference and one moving frame of reference

30
Q

anthropometrics

A

size shape and metrics of a human body limb

31
Q

volume unit

A

meter/3

32
Q

density unit

A

mass/volume

33
Q

center of mass

A

single point on an object were we consider the effects of gravity to act

34
Q

where is the highest velocity on an object

A

the distal end cuz it travels the most

35
Q

vector vs scalar info

A

vector has direction and magnitude and a scalar quantity has magnitude only

36
Q

displacement

A

straight line distance between final and initial distance

37
Q

average vs instantaneous

A

average is were ur starting and ending, instantaneous is to see time frames that are close together (short)

38
Q

is average or instantaneous the best measure for kinematics

A

instantaneous

39
Q

angular kinematics symbol

A

O with a line in between

40
Q

how much is one radiant in degree

A

57.3 degrees

41
Q

instantaneous acceleration

A

slope of a line tangent to a velocity time curve

42
Q

instantaneous velocity

A

slope of a line tangent to a position time curve

43
Q

what does the slope of a line determine on a graph

A

if its pos neg or 0

44
Q

if velocity is positive what would acceleration be

A

positive (acceleration and velocity follow each others slope)

45
Q

examine the minima and maxima of a curve, what does this tell

A

whats going on with the next dirivitie(acceleration as you know position and velocity)

46
Q

peak pos and peak neg acceleration is identified were on the graph

A

at the highest point on the positive slope and the lowest point on the negative slope

47
Q

what are the quantities of a vector

A

direction and magnitude

48
Q

sim 0 is what

A

opp/hyp

49
Q

cos 0 is what

A

adj/hyp

50
Q

tom 0 is what

A

opp/adj

51
Q

some old hippy cought another hippy tripping on acid

A
52
Q

opp is what on a triangle

A

line going up

53
Q

adj is what on a triangle

A

line that is the bottom one

54
Q

hyp is what on a triangle

A

top line

55
Q

to get 0 by itself make what negative

A

cos, sin, or tom

Biomechanics (7 decks)

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